2000 Toyota Tundra 4.7 Engine Code P0171

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2000 toyota tundra 4.7 engine code p0171. Oftentimes a P0171 means that your Toyota is having trouble with a dirty or faulty mass airflow MAF sensor or a vacuum leak downstream of the MAF sensor perhaps in the PCV line or in the valve itself. P0101 MAF or VAF I have a scanner so I turned it. After 3 years of trying to get the light off to get it inspected i took it in and said fix it.

Jump to Latest Follow 1 - 7 of 7 Posts. I took apart the xdi intake I have today and did a good cleaning cleaned the throttle body up carefully. Take a look around and see if you can find the vacuum leak.

A P0171 means that your Toyota is having trouble with a dirty or faulty mass air flow MAF sensor or a vacuum leak downstream of the MAF sensor but this code can also signify a bad O2 sensor in the exhaust on bank 1the one closest to the engine on bank 1 Also P0171 code can be tripped by a plugged fuel injector by a dirty fuel filter causing low fuel pressure or even an exhaust leak before the. My 2000 has the same code. If the problem persists the front oxygen O2 sensor may need to.

Heres a great YouTube video on how to find a vacuum leak. If the brake booster goes bad and leaks engine vacuum it will affect the fuel trims and the computer will flag this P0171 lean code. If the P0171 is combined with the P0174 code its very likely that the problem is caused by an intake leak.

Or maybe used your own OBD scanner to extract the car faults. Toyota Service. I arrived to a 2000 Toyota Tundra 34 running rough with a P0171 that was cleared by the shop.

Just read through your forum and sympathize with your P0171. You may have a. Your car or truck has either a P0171 P0174 lean fault code or both stored in the.